@@ -227,6 +227,33 @@
IOCTL(BTRFS_IOC_LOGICAL_INO, IOC_RW,
MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_logical_ino_args)))
#endif
+#ifdef BTRFS_IOC_QUOTA_CTL
+ IOCTL(BTRFS_IOC_QUOTA_CTL, IOC_RW,
+ MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_quota_ctl_args)))
+#endif
+#ifdef BTRFS_IOC_QGROUP_ASSIGN
+ IOCTL(BTRFS_IOC_QGROUP_ASSIGN, IOC_W,
+ MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_qgroup_assign_args)))
+#endif
+#ifdef BTRFS_IOC_QGROUP_CREATE
+ IOCTL(BTRFS_IOC_QGROUP_CREATE, IOC_W,
+ MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_qgroup_create_args)))
+#endif
+#ifdef BTRFS_IOC_QGROUP_LIMIT
+ IOCTL(BTRFS_IOC_QGROUP_LIMIT, IOC_R,
+ MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_qgroup_limit_args)))
+#endif
+#ifdef BTRFS_IOC_QUOTA_RESCAN
+ IOCTL(BTRFS_IOC_QUOTA_RESCAN, IOC_W,
+ MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_quota_rescan_args)))
+#endif
+#ifdef BTRFS_IOC_QUOTA_RESCAN_STATUS
+ IOCTL(BTRFS_IOC_QUOTA_RESCAN_STATUS, IOC_R,
+ MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_quota_rescan_args)))
+#endif
+#ifdef BTRFS_IOC_QUOTA_RESCAN_WAIT
+ IOCTL(BTRFS_IOC_QUOTA_RESCAN_WAIT, 0, TYPE_NULL)
+#endif
#ifdef BTRFS_IOC_GET_DEV_STATS
IOCTL(BTRFS_IOC_GET_DEV_STATS, IOC_RW,
MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_dev_stats)))
@@ -996,6 +996,20 @@ struct target_rtc_pll_info {
35, struct btrfs_ioctl_ino_path_args)
#define TARGET_BTRFS_IOC_LOGICAL_INO TARGET_IOWR(BTRFS_IOCTL_MAGIC,\
36, struct btrfs_ioctl_logical_ino_args)
+#define TARGET_BTRFS_IOC_QUOTA_CTL TARGET_IOWR(BTRFS_IOCTL_MAGIC,\
+ 40, struct btrfs_ioctl_quota_ctl_args)
+#define TARGET_BTRFS_IOC_QGROUP_ASSIGN TARGET_IOW(BTRFS_IOCTL_MAGIC, \
+ 41, struct btrfs_ioctl_qgroup_assign_args)
+#define TARGET_BTRFS_IOC_QGROUP_CREATE TARGET_IOW(BTRFS_IOCTL_MAGIC, \
+ 42, struct btrfs_ioctl_qgroup_create_args)
+#define TARGET_BTRFS_IOC_QGROUP_LIMIT TARGET_IOR(BTRFS_IOCTL_MAGIC, \
+ 43, struct btrfs_ioctl_qgroup_limit_args)
+#define TARGET_BTRFS_IOC_QUOTA_RESCAN TARGET_IOW(BTRFS_IOCTL_MAGIC, \
+ 44, struct btrfs_ioctl_quota_rescan_args)
+#define TARGET_BTRFS_IOC_QUOTA_RESCAN_STATUS TARGET_IOR(BTRFS_IOCTL_MAGIC, \
+ 45, struct btrfs_ioctl_quota_rescan_args)
+#define TARGET_BTRFS_IOC_QUOTA_RESCAN_WAIT TARGET_IO(BTRFS_IOCTL_MAGIC, \
+ 46)
#define TARGET_BTRFS_IOC_GET_DEV_STATS TARGET_IOWR(BTRFS_IOCTL_MAGIC,\
52, struct btrfs_ioctl_get_dev_stats)
#define TARGET_BTRFS_IOC_GET_FEATURES TARGET_IOR(BTRFS_IOCTL_MAGIC, \
@@ -400,6 +400,35 @@ STRUCT(btrfs_ioctl_get_dev_stats,
MK_ARRAY(TYPE_ULONGLONG,
128 - 2 - BTRFS_DEV_STAT_VALUES_MAX)) /* unused */
+STRUCT(btrfs_ioctl_quota_ctl_args,
+ TYPE_ULONGLONG, /* cmd */
+ TYPE_ULONGLONG) /* status */
+
+STRUCT(btrfs_ioctl_quota_rescan_args,
+ TYPE_ULONGLONG, /* flags */
+ TYPE_ULONGLONG, /* progress */
+ MK_ARRAY(TYPE_ULONGLONG, 6)) /* reserved */
+
+STRUCT(btrfs_ioctl_qgroup_assign_args,
+ TYPE_ULONGLONG, /* assign */
+ TYPE_ULONGLONG, /* src */
+ TYPE_ULONGLONG) /* dst */
+
+STRUCT(btrfs_ioctl_qgroup_create_args,
+ TYPE_ULONGLONG, /* create */
+ TYPE_ULONGLONG) /* qgroupid */
+
+STRUCT(btrfs_qgroup_limit,
+ TYPE_ULONGLONG, /* flags */
+ TYPE_ULONGLONG, /* max_rfer */
+ TYPE_ULONGLONG, /* max_excl */
+ TYPE_ULONGLONG, /* rsv_rfer */
+ TYPE_ULONGLONG) /* rsv_excl */
+
+STRUCT(btrfs_ioctl_qgroup_limit_args,
+ TYPE_ULONGLONG, /* qgroupid */
+ MK_STRUCT(STRUCT_btrfs_qgroup_limit)) /* lim */
+
STRUCT(btrfs_ioctl_feature_flags,
TYPE_ULONGLONG, /* compat_flags */
TYPE_ULONGLONG, /* compat_ro_flags */
This patch implements functionality for following ioctls: BTRFS_IOC_QUOTA_CTL - Enabling/Disabling quota support Enable or disable quota support for a btrfs filesystem. Quota support is enabled or disabled using the ioctls third argument which represents a pointer to a following type: struct btrfs_ioctl_quota_ctl_args { __u64 cmd; __u64 status; }; Before calling this ioctl, the 'cmd' field should be filled with one of the values 'BTRFS_QUOTA_CTL_ENABLE' (enabling quota) 'BTRFS_QUOTA_CTL_DISABLE' (disabling quota). BTRFS_IOC_QGROUP_CREATE - Creating/Removing a subvolume quota group Create or remove a subvolume quota group. The subvolume quota group is created or removed using the ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_qgroup_create_args { __u64 create; __u64 qgroupid; }; Before calling this ioctl, the 'create' field should be filled with the aproppriate value depending on if the user wants to create or remove a quota group (0 for removing, everything else for creating). Also, the 'qgroupid' field should be filled with the value for the quota group id that is to be created. BTRFS_IOC_QGROUP_ASSIGN - Asigning or removing a quota group as child group Asign or remove a quota group as child quota group of another group in the btrfs filesystem. The asignment is done using the ioctl's third argument which represents a pointert to a following type: struct btrfs_ioctl_qgroup_assign_args { __u64 assign; __u64 src; __u64 dst; }; Before calling this ioctl, the 'assign' field should be filled with the aproppriate value depending on if the user wants to asign or remove a quota group as a child quota group of another group (0 for removing, everythin else for asigning). Also, the 'src' and 'dst' fields should be filled with the aproppriate quota group id values depending on which quota group needs to asigned or removed as child quota group of another group ('src' gets asigned or removed as child group of 'dst'). BTRFS_IOC_QGROUP_LIMIT - Limiting the size of a quota group Limit the size of a quota group. The size of the quota group is limited with the ioctls third argument which represents a pointer to a following type: struct btrfs_ioctl_qgroup_limit_args { __u64 qgroupid; struct btrfs_qgroup_limit lim; }; Before calling this ioctl, the 'qgroup' id field should be filled with aproppriate value of the quota group id for which the size is to be limited. The second field is of following type: struct btrfs_qgroup_limit { __u64 flags; __u64 max_rfer; __u64 max_excl; __u64 rsv_rfer; __u64 rsv_excl; }; The 'max_rfer' field should be filled with the size to which the quota group should be limited. The 'flags' field can be used for passing additional options and can have values which can be found on: https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/btrfs.h#L67 BTRFS_IOC_QUOTA_RESCAN_STATUS - Checking status of running rescan operation Check status of a running rescan operation. The status is checked using the ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_quota_rescan_args { __u64 flags; __u64 progress; __u64 reserved[6]; }; If there is a rescan operation running, 'flags' field is set to 1, and 'progress' field is set to aproppriate value which represents the progress of the operation. BTRFS_IOC_QUOTA_RESCAN - Starting a rescan operation Start ar rescan operation to Trash all quota groups and scan the metadata again with the current config. Before calling this ioctl, BTRFS_IOC_QUOTA_RESCAN_STATUS sould be run to check if there is already a rescan operation runing. After that ioctl call, the received 'struct btrfs_ioctl_quota_rescan_args' should be than passed as this ioctls third argument. BTRFS_IOC_QUOTA_RESCAN_WAIT - Waiting for a rescan operation to finish Wait until a rescan operation is finished (if there is a rescan operation running). The third ioctls argument is ignored. Implementation notes: Almost all of the ioctls in this patch use structure types as third arguments. That is the reason why aproppriate thunk definitions were added in file 'syscall_types.h'. --- linux-user/ioctls.h | 27 +++++++++++++++++++++++++++ linux-user/syscall_defs.h | 14 ++++++++++++++ linux-user/syscall_types.h | 29 +++++++++++++++++++++++++++++ 3 files changed, 70 insertions(+)